All the parts are recycled materials. The base is a discarded fan base, 18" in diameter. The 15" diameter platform is a round piece of plywood from my scrap wood collection.
The pole in this feeding platform telescopes for height adjustment. It came from another fan base. When my cat was smaller, he needed a 5-gallon bucket set next to the platform as a step for getting up to the food. Not any more.
Step 1: THE BASE
The wood under the platform has a hole that fits over the top of the vertical stand pole, thus securely holding the platform.
The feed bowl is made to slide on and off the piece of wood that protrudes from the side of the platform. I used some PVC material from pipe scraps to make the channel underneath the bowl that holds it in place.